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Acta Agronomica Sinica ›› 2020, Vol. 46 ›› Issue (5): 798-806.doi: 10.3724/SP.J.1006.2020.92046

• RESEARCH NOTES • Previous Articles    

A dynamic model and its characteristics for nitrogen accumulation after transplanting in medium-maturity types of Yongyou japonica/indica hybrids

Tian-Yao MENG1,Jia-Lin GE2,Xu-Bin ZHANG2,Huan-He WEI2,Yu LU2,Xin-Yue LI2,Yuan TAO2,En-Hao DING2,Gui-Sheng ZHOU1,*(),Qi-Gen DAI2,*()   

  1. 1Joint International Research Laboratory of Agriculture and Agro-product Safety, Ministry of Education / Institute of Agricultural Science and Technological Development, Yangzhou University, Yangzhou 225009, Jiangsu, China
    2Jiangsu Key Laboratory of Crop Genetics and Physiology / Jiangsu Key Laboratory of Crop Cultivation and Physiology / Jiangsu Co-innovation Center for Modern Production Technology of Grain Crops / Agricultural College of Yangzhou University, Yangzhou 225009, Jiangsu, China
  • Received:2019-08-29 Accepted:2020-01-15 Online:2020-05-12 Published:2020-01-24
  • Contact: Gui-Sheng ZHOU,Qi-Gen DAI E-mail:gszhou@yzu.edu.cn;qgdai@yzu.edu.cn
  • Supported by:
    This study was supported by the National Natural Science Foundation of China(31901448);the Natural Science Foundation of the Jiangsu Higher Education Institutions of China(19KJB210004);the Priority Academic Program Development of Jiangsu Higher Education Institutions.

Abstract:

In order to quantitatively describe the dynamics of nitrogen accumulation after transplanting of medium-maturity types of Yongyou japonica/indica hybrids (MJIH), and to elucidate the mechanism of high yield based on modelling methods, MJIH Yongyou 2640 and Yongyou 1640, japonica conventional rice (JC) Yangjing 4038 and Yangjing 4227, and indica hybrid rice (IH) Xinliangyou 6380 and Yangliangyou 6 were used to compare the differences in nitrogen uptake characteristics after transplanting in 2015 and 2016. Grain yield of MJIH averaged 11.65 t hm -2 across two years, significantly higher than JC (10.74 t hm -2) and IH (10.01 t hm -2). Similar trends were also observed in nitrogen accumulation amount at maturity and nitrogen accumulation per 100 kg grain. For MJIH, the nitrogen accumulation and its ratio to total nitrogen accumulation at maturity was the highest in panicle, the medium in leaf, and lower in stem. For JC and IH, the nitrogen accumulation and its ratio to total nitrogen accumulation at maturity was the highest in panicle, the medium in stem, and lower in leaf. Compared with JC and IH, MJIH had higher ratio of leaf nitrogen accumulation, while lower ratio of panicle nitrogen accumulation to total nitrogen accumulation at maturity. There was a good fitness between Gompertz equation and dynamics of nitrogen accumulation of rice varieties in our study. Compared with JC and IH, MJIH had higher nitrogen accumulation amount in the early, middle and late nitrogen accumulation stages, which was due to long time of accumulation and higher accumulation rate in the middle stage, and higher nitrogen accumulation rate in the early and late stages. This study applied Gompertz equation to simulate the dynamics in nitrogen accumulation after transplanting of different rice varietal groups, and analyze the superiority of nitrogen accumulation of MJIH based on Gompertz equation.

Key words: Yongyou japonica/indica hybrids, medium-maturity types, nitrogen accumulation, Gompertz equation

Table 1

Duration and dates of main growth stages of tested varieties"

品种类型
Variety type
品种
Variety
主要生育期
Dates of main growth stages (month/day)
主要生育阶段天数
Duration of main growth periods (d)
播种期
Sowing
date
拔节期
Jointing
date
抽穗期
Heading
date
成熟期
Maturity
date
播种-拔节期
Sowing- Jointing
拔节-抽穗期
Jointing- Heading
抽穗-成熟期
Heading-
Maturity
2015
中熟籼粳杂交稻MJIH 甬优2640 Yongyou 2640 5/23 7/20 8/21 10/20 58 32 60
甬优1640 Yongyou 1640 5/23 7/20 8/22 10/21 58 33 60
常规粳稻JC 扬粳4038 Yangjing 4038 5/23 7/26 8/25 10/18 64 30 54
扬粳4227 Yangjing 4227 5/23 7/26 8/25 10/19 64 30 55
杂交籼稻IH 扬两优6号 Yangliangyou 6 5/23 7/30 8/27 10/17 68 28 51
新两优6380 Xinliangyou 6380 5/23 7/30 8/26 10/17 68 27 52
2016
中熟籼粳杂交稻MJIH 甬优2640 Yongyou 2640 5/23 7/19 8/21 10/20 57 33 60
甬优1640 Yongyou 1640 5/23 7/20 8/21 10/20 58 32 60
常规粳稻JC 扬粳4038 Yangjing 4038 5/23 7/27 8/26 10/19 65 30 54
扬粳4227 Yangjing 4227 5/23 7/27 8/25 10/18 65 29 54
杂交籼稻IH 扬两优6号 Yangliangyou 6 5/23 7/30 8/26 10/17 68 27 52
新两优6380 Xinliangyou 6380 5/23 7/30 8/27 10/17 68 28 51

Table 2

Grain yield, nitrogen accumulation, and nitrogen use efficiency of tested varieties"

品种类型
Variety type
品种
Variety
产量
Grain yield
(t hm-2)
总吸氮量
Total nitrogen
accumulation
(kg hm-2)
氮素籽粒生产率
NUEg
(kg grain kg-1)
百千克籽粒吸氮量
100 kg nitrogen
accumulation
(kg grain kg-1)
2015
中熟籼粳杂交稻 甬优2640 Yongyou 2640 11.56 250.7 46.3 2.16
MJIH 甬优1640 Yongyou 1640 11.64 251.7 46.1 2.17
常规粳稻 扬粳4038 Yangjing 4038 10.68 210.7 50.8 1.97
JC 扬粳4227 Yangjing 4227 10.74 213.5 50.6 1.98
杂交籼稻 扬两优6号 Yangliangyou 6 10.08 202.5 49.9 2.00
IH 新两优6380 Xinliangyou 6380 9.95 199.1 49.7 2.01
MJIH平均 MJIH mean 11.60 a 251.2 a 46.2 b 2.17 a
JC平均 JC mean 10.72 b 212.1 b 50.7 a 1.97 b
IH平均 IH mean 10.02 c 200.8 c 49.8 ab 2.01 ab
2016
中熟籼粳杂交稻 甬优2640 Yongyou 2640 11.65 256.5 45.7 2.19
MJIH 甬优1640 Yongyou 1640 11.73 248.5 47.2 2.12
常规粳稻 扬粳4038 Yangjing 4038 10.62 215.3 49.2 2.03
JC 扬粳4227 Yangjing 4227 10.87 216.1 50.5 1.98
杂交籼稻 扬两优6号 Yangliangyou 6 10.13 202.9 49.8 2.01
IH 新两优6380 Xinliangyou 6380 9.88 200.6 49.3 2.03
MJIH平均 MJIH mean 11.69 a 252.5 a 46.5 a 2.16 a
JC平均 JC mean 10.75 b 215.7 b 49.9 a 2.00 a
IH平均 IH mean 10.00 c 201.8 c 49.6 a 2.02 a

Table 3

Nitrogen accumulation in rice organs at maturity of tested varieties "

品种类型
Variety type
品种
Variety
总吸氮量
Total nitrogen
accumulation
(kg hm-2)
吸氮量
Nitrogen accumulation (kg hm-2)
吸氮量所占比例
Nitrogen allocation rate (%)
叶片
Leaf
茎鞘
Stem
穗部
Panicle
叶片
Leaf
茎鞘
Stem
穗部
Panicle
2015
中熟籼粳杂交稻 甬优2640 Yongyou 2640 250.7 53.6 32.8 164.2 21.4 13.1 65.5
MJIH 甬优1640 Yongyou 1640 251.7 55.6 34.2 161.8 22.1 13.6 64.3
常规粳稻 扬粳4038 Yangjing 4038 210.7 36.0 35.2 139.5 17.1 16.7 66.2
JC 扬粳4227 Yangjing 4227 213.5 33.3 36.9 143.3 15.6 17.3 67.1
杂交籼稻 扬两优6号 Yangliangyou 6 202.5 11.9 26.5 164.0 5.9 13.1 81.0
IH 新两优6380 Xinliangyou 6380 199.1 12.3 24.1 162.7 6.2 12.1 81.7
MJIH平均 MJIH mean 251.2 a 54.6 a 33.5 ab 163.0 a 21.8 a 13.4 b 64.9 c
JC平均 JC mean 212.1 b 34.7 b 36.1 a 141.4 b 16.4 b 17.0 a 66.7 b
IH平均 IH mean 200.8 c 12.1 c 25.3 b 163.3 a 6.1 c 12.6 b 81.4 a
2016
中熟籼粳杂交稻 甬优2640 Yongyou 2640 256.5 59.8 32.6 164.1 23.3 12.7 64.0
MJIH 甬优1640 Yongyou 1640 248.5 51.5 32.8 164.1 20.7 13.2 66.1
常规粳稻 扬粳4038 Yangjing 4038 215.3 35.3 39.0 140.9 16.4 18.1 65.5
JC 扬粳4227 Yangjing 4227 216.1 36.1 34.8 145.3 16.7 16.1 67.2
杂交籼稻 扬两优6号 Yangliangyou 6 202.9 12.3 25.7 164.9 6.1 12.7 81.2
IH 新两优6380 Xinliangyou 6380 200.6 10.9 26.5 163.2 5.4 13.2 81.4
MJIH平均 MJIH mean 252.5 a 55.7 a 32.7 ab 164.1 a 22.0 a 13.0 b 65.0 c
JC平均 JC mean 215.7 b 35.7 b 36.9 a 143.1 b 16.6 b 17.1 a 66.3 b
IH平均 IH mean 201.8 c 11.6 c 26.1 b 164.0 a 5.7 c 13.0 b 81.3 a

Fig. 1

Dynamics in nitrogen accumulation during rice growing season of tested varieties (2016) "

Table 4

Simulation equations of nitrogen accumulation after transplanting of Yongyou 2640 (2016) "

编号
Number
模拟模型
Simulation model
参数 Parameter 相关系数
Correlation coefficient
a b c d
1 y=$ae^{-e^{b}-cx}$ 256.26 2.10 0.0492 0.997
2 y=$\frac{ab+cx^{d}} {b+x^{d}}$ -4.10 14667.11 272.05 3.02 0.997
3 y=$\frac{a}{(1+e^{b-cx})^{\frac{1}{d}}}$ 255.69 -0.0963 0.0504 0.0436 0.997
4 y=$\frac{a}{1+be^{-cx}}$ 248.28 45.87 0.0758 0.994
5 y=$ae \frac{-(x-b)^{2}}{2c^{2}}$ 262.51 108.99 45.02 0.982
6 y=a+bx+cx2 -38.07 4.00 -0.0127 0.980

Table 5

Simulation equations of nitrogen accumulation during growth period of tested varieties (2016) "

品种类型
Variety type
品种
Variety
方程参数 Parameter 拟合方程
Simulated equation
a b c
中熟籼粳杂交稻
MJIH
甬优2640 Yongyou 2640 256.26 2.10 0.0492 W = 256.26 $e^{-exp(2.10-0.0492t)}$, R2 = 0.995
甬优1640 Yongyou 1640 255.83 2.03 0.0479 W = 255.83 $e^{-exp(2.03-0.0479t)}$, R2 = 0.994
常规粳稻
JC
扬粳4038 Yangjing 4038 219.20 2.14 0.0486 W = 219.20 $e^{-exp(2.14-0.0486t)}$, R2 = 0.996
扬粳4227 Yangjing 4227 219.21 2.35 0.0545 W = 219.21 $e^{-exp(2.35-0.0545t)}$, R2 = 0.994
杂交籼稻
IH
扬两优6号 Yangliangyou 6 203.21 2.18 0.0530 W = 203.21 $e^{-exp(2.18-0.0530t)}$, R2 = 0.998
新两优6380 Xinliangyou 6380 202.97 2.04 0.0487 W = 202.97 $e^{-exp(2.04-0.0487t)}$, R2 = 0.994

Fig. 2

Relationship between simulated value and measured value of nitrogen accumulation of the tested varieties ** represents significantly different at the 1% probability level. "

Table 6

Parameters of nitrogen accumulation during growth period of tested varieties (2016) "

品种类型
Variety type
品种
Variety
最大氮素积累速率
Maximum nitrogen
accumulation rate (kg hm-2 d-1)
最大氮素积累速率出现时间
Time to maximum
nitrogen accumulation rate (d)
中熟籼粳杂交稻 甬优2640 Yongyou 2640 4.6 42.7
MJIH 甬优1640 Yongyou 1640 4.5 42.4
常规粳稻 扬粳4038 Yangjing 4038 3.9 44.0
JC 扬粳4227 Yangjing 4227 4.4 43.1
杂交籼稻 扬两优6号 Yangliangyou 6 4.0 41.1
IH 新两优6380 Xinliangyou 6380 3.6 41.9
MJIH平均 MJIH mean 4.6 a 42.5 a
JC平均 JC mean 4.2 b 43.6 a
IH平均 IH mean 3.8 c 41.5 a

Table 7

Characteristics of nitrogen accumulation in the early, middle, and late stages of tested varieties (2016) "

阶段
Stage
品种类型
Variety type
品种
Variety
天数
Days
(d)
平均积累速率
ARNA
(kg hm-2 d-1)
氮素积累量
NAA
(kg hm-2)
渐增期 中熟籼粳杂交稻 甬优2640 Yongyou 2640 23.1 0.8028 18.6
Early stage MJIH 甬优1640 Yongyou 1640 22.3 0.8313 18.5
常规粳稻 扬粳4038 Yangjing 4038 24.3 0.6487 15.7
JC 扬粳4227 Yangjing 4227 25.5 0.6174 15.7
杂交籼稻 扬两优6号 Yangliangyou 6 23.0 0.6391 14.7
IH 新两优6380 Xinliangyou 6380 22.1 0.6626 14.7
MJIH平均 MJIH mean 22.7 b 0.8171 a 18.6 a
JC平均 JC mean 24.9 a 0.6331 b 15.7 b
IH平均 IH mean 22.6 b 0.6508 b 14.7 c
快增期 中熟籼粳杂交稻 甬优2640 Yongyou 2640 39.1 3.9940 156.1
Middle stage MJIH 甬优1640 Yongyou 1640 40.1 3.8819 155.8
常规粳稻 扬粳4038 Yangjing 4038 39.6 3.3747 133.5
JC 扬粳4227 Yangjing 4227 35.3 3.7846 133.5
杂交籼稻 扬两优6号 Yangliangyou 6 36.3 3.4118 123.8
IH 新两优6380 Xinliangyou 6380 39.5 3.1313 123.6
MJIH平均 MJIH mean 39.6 a 3.9380 a 156.0 a
JC平均 JC mean 37.4 b 3.5797 b 133.5 b
IH平均 IH mean 37.9 b 3.2715 b 123.7 c
缓增期 中熟籼粳杂交稻 甬优2640 Yongyou 2640 67.8 1.4808 100.4
Late stage MJIH 甬优1640 Yongyou 1640 67.5 1.3712 92.6
常规粳稻 扬粳4038 Yangjing 4038 66.2 1.2351 81.7
JC 扬粳4227 Yangjing 4227 69.2 1.1933 82.6
杂交籼稻 扬两优6号 Yangliangyou 6 70.7 1.1189 79.1
IH 新两优6380 Xinliangyou 6380 68.4 1.1261 77.0
MJIH平均 MJIH mean 67.7 a 1.4260 a 96.5 a
JC平均 JC mean 67.7 a 1.2142 b 82.2 b
IH平均 IH mean 69.5 a 1.1225 b 78.1 b
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